vue動態新增input(背景色相異)

index單/雙套用不同class

by cactus77kiki

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.6.10/vue.min.js"></script>
<div id="app">
  <h2>Todos:</h2>
  <button v-on:click="btnPush" type="button">新增
  </button>
  {{todos}}
  <ol>
    <li v-for="(todo,index) in todos" v-bind:class="{'odd': index % 2 === 0, 'even': index % 2 !== 0 }">
      <label>
      {{index}}
        <input type="checkbox"
          v-on:change="toggle(todo)"
          v-bind:checked="todo.done">

        <del v-if="todo.done">
          {{ todo.text }}
        </del>
        <span v-else>
          {{ todo.text }}
        </span>
        <input type="text" v-model="todo.cname"/>
      </label>
    </li>
  </ol>
</div>

CSS

body {
  background: #20262E;
  padding: 20px;
  font-family: Helvetica;
}

#app {
  background: #fff;
  border-radius: 4px;
  padding: 20px;
  transition: all 0.2s;
}

li {
  margin: 8px 0;
}

h2 {
  font-weight: bold;
  margin-bottom: 15px;
}

del {
  color: rgba(0, 0, 0, 0.3);
}

.odd{
  background: #ffff66;
}

.even {
  background: #99ccff;
}

JavaScript

new Vue({
  el: "#app",
  data: {
    todos: [
      { text: "Learn JavaScript", done: false,cname:"" },
      { text: "Learn Vue", done: false ,cname:""},
      { text: "Play around in JSFiddle", done: true ,cname:""},
      { text: "Build something awesome", done: true ,cname:""}
    ]
  },
  methods: {
  	toggle: function(todo){
    	todo.done = !todo.done
    },
    btnPush:function(){
    	//alert("gggg");
 var newone = {};//new Object();
 newone.text = "";
 newone.done=false;
 newone.cname="";
 this.todos.push(newone);     //this.todos.push({text:"aaaa",done:false,cname:"ggg"});	
    }
  }
})